Minnesota · DNR survey data
Union Lake
Union Lake covers 93 acres in Wright County, running to 35 feet, last surveyed by the DNR in 2022. The Minnesota DNR has not published bathymetry for this lake, so there is no depth map here, just the survey record: what the nets held and how big it ran.
DNR survey data
Fish species
Largemouth bassGood numbers51.5per hr (electrofishing)9"Typical20"Biggest
Lengths measured · 79 fish
Recent surveysLengths measured · 79 fish
2017Lengths measured · 26 fish
2012Lengths measured · 30 fish
2007Lengths measured · 2 fish
2002Only 2 fish measured that year — too few to read as a shape.
Northern pikeFair numbers6.5per gill net23"Typical34"Biggest
Lengths measured · 27 fish
Recent surveysLengths measured · 27 fish
2017Lengths measured · 33 fish
2012Lengths measured · 29 fish
2007Lengths measured · 85 fish
2002BluegillOne of the best around78.4per trap net6"Typical8"Biggest
Lengths measured · 1822 fish
Recent · 2022Lengths measured · 877 fish
2022Lengths measured · 945 fish
2017Lengths measured · 576 fish
2012Lengths measured · 388 fish
2007CrappieFair numbers11.2per trap net8"Typical12"Biggest
Lengths measured · 281 fish
Recent · 2022Lengths measured · 139 fish
2022Lengths measured · 142 fish
2017Lengths measured · 137 fish
2012Lengths measured · 94 fish
2007Yellow perchFair numbers2.5per gill net6"Typical7"Biggest
Lengths measured · 14 fish
Recent surveysLengths measured · 14 fish
2017Lengths measured · 14 fish
2012Lengths measured · 13 fish
2007Lengths measured · 122 fish
2002Rates come from standard DNR survey gear (gill nets, trap nets, electrofishing), judged against statewide benchmarks for the same gear — which is why the same number of fish per net can read differently for two species. Where the standard gear can't count a species reliably, the page shows presence and size only. Typical is the middle fish of those measured. Open a row for the full length spread, survey by survey. You can read every number on this page without an app or an account.
Recent reports
Union Lake fishing reports
Recent reports on Union Lake from guides, tournaments and regular anglers. Anything posted in the last two weeks also bumps the matching spots on the live map, so you'll see a "matches a recent report" tag on them.
Public water access
Getting on the water
- Union Lake (trailer launch)
Within 30 miles
Nearby lakes
- Betty Lake · 154 ac · 1.8 mi
- Francis Lake · 1,053 ac · 2.2 mi
- West Lake Sylvia · 904 ac · 2.3 mi
- Moose Lake · 87 ac · 2.3 mi
- East Lake Sylvia · 669 ac · 3.1 mi
- Louisa Lake · 193 ac · 3.6 mi
- Marie Lake · 146 ac · 4.5 mi
- John Lake · 398 ac · 4.5 mi
Quick answers
Frequently asked questions
Is there a depth map for Union Lake?
The Minnesota DNR has not published bathymetry for Union Lake, so this page carries the survey record instead: species, catch rates and stocking history.
What fish are in Union Lake?
The most recent DNR survey (2022) recorded walleye, largemouth bass, northern pike, bluegill, crappie, yellow perch, channel catfish.
Does Union Lake have a public access?
Yes. Union Lake has one public access site: Union Lake (trailer launch).
Is Union Lake stocked?
No stocking is on record for Union Lake in the DNR's stocking database.
When was Union Lake last surveyed?
The Minnesota DNR last surveyed Union Lake in 2022, the most recent of 15 surveys on record.
Survey numbers are the Minnesota DNR's. How this site reads them →
Page updated .